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  #121  
Old 03-23-2014, 11:03 AM
Hornet Hornet is offline
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Run a ground to the engine block too.
There's 3 body grounds under the hood,it's worth doing all 3.
2 on the drivers fender,and one on the pass fender.
Carefully grind the paint off the fender grounds before installing your new grounds
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  #122  
Old 03-24-2014, 10:32 PM
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MF2000 MF2000 is offline
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Quote:
Originally Posted by MF2000 View Post
I have all my wires made up, I'm only doing 4 of them for now.

Here they are with lengths"

1) -battery to fender= 16"

2) + battery to fuse box =29"

3) + alternator to + battery = 36"

4) - battery to frame= 53" (I'm running it to one of the bolts near the front)

I'll be installing them sometime this coming week. I am keeping an open mind about this, since it seems almost to good to be true. I'm not doubting the OP, but it sure seems interesting. I'm also doing a mpg study, so I'l have hard numbers to back this up.

Change of plans to above. I couldn't add anymore wires to the - battery post, so on #4 above I changed it. The new #4 is frame to bolt on alternator (one that holds it in place).

Tomorrow night I'm going to add an additional ground from the engine (head on passenger side) to the ground that connects to the PCM on the passenger side fender.
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  #123  
Old 03-25-2014, 05:14 PM
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joostan joostan is offline
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Quote:
Originally Posted by MF2000 View Post
Change of plans to above. I couldn't add anymore wires to the - battery post, so on #4 above I changed it. The new #4 is frame to bolt on alternator (one that holds it in place).

Tomorrow night I'm going to add an additional ground from the engine (head on passenger side) to the ground that connects to the PCM on the passenger side fender.
Looking forward to hearing some results!
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  #124  
Old 03-26-2014, 04:40 PM
justkuz justkuz is offline
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Just ordered some 4 gauge wire to add to mine to see what I notice
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  #125  
Old 03-26-2014, 08:34 PM
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Here is my results that look promising. I gassed up about 2 weeks ago and got a calculated 18.6mpg. My EVIC reading was 20.2mpg. That 1.5-1.9mpg diff between EVIC and actual is what I have usually gotten since the truck was new. The truck is a 2014 CC, 2WD, 3.21 diff, 3.6, tradesman with chrome bumpers, 32 gal tank, 17inch wheels, and no slip rear diff. I had installed all the wires about 10 days ago.

Today, I gassed again and bought 21.2 gal and had traveled 427 miles - 20.14 mpg. About 30 percent was highway travel and the remainder was cold warmups, and stop and go traffic in northern virginia. The EVIC showed 20.6 mpg and that I had run the motor 16 hours over that 427 miles - about 27 mph average speed. So, you can see it was a lot of slow city driving in the mix. The results show that I got way closer, about 1mpg closer, between the EVIC and actual. So, I think I did get better mileage with the wires installed.

I'm going on a 2000 mile road trip in a week or so and I'll have perhaps a better read on gas mileage. The best I've gotten in the past on a long drive was 23mpg.

so, there ya go...

Today, after I gassed up I ran by the truck scales and weighed in at 5280 pounds. I have some 4 inch nerf bars and a bakflip bed cover that weigh together about 120 pounds. I'm about 180 and had another 30 pounds of gear in the truck. 25 gallons of gas weighs about 200 pounds. so, the basic truck weighs in at about 4750 - fairly light for a crew cab.

Last edited by Juma; 03-27-2014 at 09:32 AM.
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  #126  
Old 03-26-2014, 11:28 PM
Hornet Hornet is offline
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No kidding that's light for a crew cab,my RCSB 2013 4.7 with Mopar tonnue cover/bed rug etc.,and full of fuel crosses the scales at 4752lbs.
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  #127  
Old 04-06-2014, 09:21 AM
ssdoug ssdoug is offline
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I just read 13 pages about this wire upgrade and nobody has put a voltmeter on the ground to check for voltage backup??? Its not to hard just put the neg. to the battery neg. and the pos. to the start point of the ground . If you have more than 2/10 of a volt it needs help.
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  #128  
Old 04-06-2014, 10:27 AM
Juma Juma is offline
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Well, I took a 700 mile trip and the truck got worse mileage-21.5. It was hilly,I had two people and 500 pound load, and ran 70-75mph. It ran strong but did not impress. Maybe just the route, wind, and speed? Oh well.....

It does do a bit better around town.
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  #129  
Old 04-12-2014, 05:20 PM
Catdaddy too Catdaddy too is offline
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Great thread guys, thanks
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  #130  
Old 04-13-2014, 09:48 AM
Hemi HFE Hemi HFE is online now
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sry guys,
but this whole idea 'upgrading ground wires yields massive FE gains' doesnt make sense to me...

Quote:
Originally Posted by ssdoug View Post
I just read 13 pages about this wire upgrade and nobody has put a voltmeter on the ground to check for voltage backup??? Its not to hard just put the neg. to the battery neg. and the pos. to the start point of the ground . If you have more than 2/10 of a volt it needs help.
Yes. First step.

But I'd be surprised if you saw more than 0.05V.

Normal power consumption during operation is pretty low,
I'm sure its less than 30A, and probably less than 20Amps.
{can someone confirm/deny?}

This is not much...

The OE wiring has been sized appropriately.

If there was ANY fuel economy gains to be made by upgrading wire size,
IT WOULD HAVE BEEN DONE already by Ram and every single other OE.

Any anecdotal data (like 'I made the change, and my next tankful was better') y'all provide is meaningless.
There are WAY TOO MANY variables involved in fuel economy.

To get any real understanding of a change, you can only change ONE variable.
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